parking brake, rear pads

So, here is Toyota Ireland position on the lubrication of the brake components:

email:

Dear Mr

Thank you for both your e-mails, the contents of which are noted and I am sorry for any delay in replying.

We would like to take this opportunity to thank you for your patronage for Toyota products and are sorry to hear of the level of service afforded to you by .

In discussing your concerns with our technical department we can confirm during the replacement of the brake pads and discs specific grease is required for individual components. During the replacement of the brake pads and shims, 08887-80609 based grease should be used to lubricate same. Lubricating the brake pins is not required at each service, however in the event of required lubrication of the brake pins, a lithium soap base grease is recommended (08887-01206). We can confirm these parts are available to order form any toyota main dealer.

We can confirm your vehicle will not be subject to the recent Prius recall regarding the braking system as this is specific to new model, 3rd generation Toyota Prius manufactured in late 2008-2009.

Kind regards,


Customer Relations Executive
Toyota Irelandwww.toyota.ie

 

so this week I picked up ordered 08887-01206 Lithium Soap Base Glycol Grease (product to use on pins).

Since last post when I cleaned the pins and applied no-name lithium grease from some local garage I had a chance to drive about 900-1000km's.

Interesting observation, the lithium grease has dried out and crystallized, leaving dry spots and dry pieces inside the rubber (pictures attached). The calliper pin was completely dry!

Another grease not to be used on brakes (calliper pins) is light lithium grease, similarly to copper grease.


Beware not to use incorrect types of grease.

I was in a bit of hurry today so I didn't take much pictures, I will upload another pictures soon (when I get my hands on front brakes, to service the front brakes, clean brakes and lubricate the pins).

The new grease smells like chemical silicone with addition of some other smells, it is red in colour, and feels

like soap with silicone, the thickness is like toothpaste and it comes in the same package as toothpaste (don't use it for the purpose !) haha

anyway I am happy with the rear brakes performance after completing this service task.

 

Do not open any hydraulic hoses while working on the brakes.

I'm afraid you will need smaller and bigger hammer... smaller hammer to delicately knock repeatedly in the calliper and bigger hammer to release seized part.

Before you start with smaller hammer Make sure to remove the calliper pin which you was able to unlock, to prevent the damage to the pin.

Post pictures of the parts that seized.

Do not use the heat.

Small hammer and try to knock many times, similarly as people knock in the suspension of the train while the train is stationery at the platform.

Do not hit the disc or pads, I assume your pads are damaged anyway and maybe discs too.

Please post some pictures and drink plenty of hot tea during this weather while working on your Prii.

Remember to use Toyota lubricants as I posted in previous links, this will ensure longevity of your new parts (try to use new parts where possible on brakes)

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yes, sorry I don't visit daily here.

Is this the very same caliper that seized and you had to use hammer with ? -presumably this is the tool you used? - Well I think it is the same wheel anyway.

You need more effort.

I think the pins and the dirty caliper slides are your problems (as you already managed to realize).

You need to buy some metal brush (small size or special type of metal brush which you can attach to the cordless or corded drill), place the caliper pin inside of the vice (the tool used to hold things)
or use the tool called vice-grips if you don't have the vice.

clean the pins using above metal wire and finish with metal wool (medium grade will be fine).

also:
try to clean the hardened lubricant inside the places where the pin slides on caliper using brake cleaner or petrol (yes petrol).



purchase correct grease from toyota (I have posted the part numbers in this thread) - you will need red color grease for pins.

complete the job on each wheel.

Enjoy Saturday - it may take some time.

 

Please Note:

I did not post any pictures showing the correct application of the Toyota grease in this thread. The pictures I posted showed FAILED attempt to clean/lubricate the calliper pins.

I got this almost right at the 4th time. - yes 4th time.

You do need to pay attention how you clean the elements and you need metal brush, metal wool, petrol/brake cleaner and some tool to hold the parts in place firmly while attempting to clean these metal parts. The grease which hardened is very hard and you may need mechanical means to do it: wire brush attached to bolt to place in the drill (this is the reason I said about the metal brush which you can attach to the drill or to cordless drill) to remove the dirt from the pins.

The metal wool is nice to work on calipers and slides but may not be enough to work on the pins.

 

Make sure not to over-lubricate or under-lubricate the pins, you will notice lines cut along the pins, try to apply just enough of Toyota red grease on the pins but don't cover these lines, let the air escape when you place the pins inside the caliper (do not create a vacuum effect) as then your caliper will push one side towards the disc and you will hear the pad grinding the disc.

- you still need to clean your parts correctly (above is the very last step you need to do after you service properly your brakes).

 

If you have time try to re-do it before the winter. Pay more attention.
You need good brakes for the winter.

Be careful about the vacuum effect while you re install the calliper pin. Read about it. It must be right. Otherwise your inner or outer pad will constantly touch the disc. This is the cause of your high temperature on the right wheel.

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